where \( p[A = a] \)  denotes the sensitive attribute's marginal distribution of \( P \)  [1]}. The larger \(\tau \) , the more fair \(P\) . Representation rate fairness can be related to several other notions [1]}, [3]}, see Section . Hereafter, we let
\(\textsc {RR}(P, a_{i}, a_{j}) := \frac{p[A = a_{i}]}{p[A = a_{j}]}\) 
